2 * Asus PC WMI hotkey driver
4 * Copyright(C) 2010 Intel Corporation.
5 * Copyright(C) 2010-2011 Corentin Chary <corentin.chary@gmail.com>
7 * Portions based on wistron_btns.c:
8 * Copyright (C) 2005 Miloslav Trmac <mitr@volny.cz>
9 * Copyright (C) 2005 Bernhard Rosenkraenzer <bero@arklinux.org>
10 * Copyright (C) 2005 Dmitry Torokhov <dtor@mail.ru>
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License as published by
14 * the Free Software Foundation; either version 2 of the License, or
15 * (at your option) any later version.
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
27 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
29 #include <linux/kernel.h>
30 #include <linux/module.h>
31 #include <linux/init.h>
32 #include <linux/types.h>
33 #include <linux/slab.h>
34 #include <linux/input.h>
35 #include <linux/input/sparse-keymap.h>
37 #include <linux/backlight.h>
38 #include <linux/leds.h>
39 #include <linux/rfkill.h>
40 #include <linux/pci.h>
41 #include <linux/pci_hotplug.h>
42 #include <linux/hwmon.h>
43 #include <linux/hwmon-sysfs.h>
44 #include <linux/debugfs.h>
45 #include <linux/seq_file.h>
46 #include <linux/platform_device.h>
47 #include <linux/thermal.h>
48 #include <acpi/acpi_bus.h>
49 #include <acpi/acpi_drivers.h>
50 #include <acpi/video.h>
54 MODULE_AUTHOR("Corentin Chary <corentin.chary@gmail.com>, "
55 "Yong Wang <yong.y.wang@intel.com>");
56 MODULE_DESCRIPTION("Asus Generic WMI Driver");
57 MODULE_LICENSE("GPL");
59 #define to_platform_driver(drv) \
60 (container_of((drv), struct platform_driver, driver))
62 #define to_asus_wmi_driver(pdrv) \
63 (container_of((pdrv), struct asus_wmi_driver, platform_driver))
65 #define ASUS_WMI_MGMT_GUID "97845ED0-4E6D-11DE-8A39-0800200C9A66"
67 #define NOTIFY_BRNUP_MIN 0x11
68 #define NOTIFY_BRNUP_MAX 0x1f
69 #define NOTIFY_BRNDOWN_MIN 0x20
70 #define NOTIFY_BRNDOWN_MAX 0x2e
71 #define NOTIFY_KBD_BRTUP 0xc4
72 #define NOTIFY_KBD_BRTDWN 0xc5
75 #define ASUS_WMI_METHODID_SPEC 0x43455053 /* BIOS SPECification */
76 #define ASUS_WMI_METHODID_SFBD 0x44424653 /* Set First Boot Device */
77 #define ASUS_WMI_METHODID_GLCD 0x44434C47 /* Get LCD status */
78 #define ASUS_WMI_METHODID_GPID 0x44495047 /* Get Panel ID?? (Resol) */
79 #define ASUS_WMI_METHODID_QMOD 0x444F4D51 /* Quiet MODe */
80 #define ASUS_WMI_METHODID_SPLV 0x4C425053 /* Set Panel Light Value */
81 #define ASUS_WMI_METHODID_SFUN 0x4E554653 /* FUNCtionalities */
82 #define ASUS_WMI_METHODID_SDSP 0x50534453 /* Set DiSPlay output */
83 #define ASUS_WMI_METHODID_GDSP 0x50534447 /* Get DiSPlay output */
84 #define ASUS_WMI_METHODID_DEVP 0x50564544 /* DEVice Policy */
85 #define ASUS_WMI_METHODID_OSVR 0x5256534F /* OS VeRsion */
86 #define ASUS_WMI_METHODID_DSTS 0x53544344 /* Device STatuS */
87 #define ASUS_WMI_METHODID_DSTS2 0x53545344 /* Device STatuS #2*/
88 #define ASUS_WMI_METHODID_BSTS 0x53545342 /* Bios STatuS ? */
89 #define ASUS_WMI_METHODID_DEVS 0x53564544 /* DEVice Set */
90 #define ASUS_WMI_METHODID_CFVS 0x53564643 /* CPU Frequency Volt Set */
91 #define ASUS_WMI_METHODID_KBFT 0x5446424B /* KeyBoard FilTer */
92 #define ASUS_WMI_METHODID_INIT 0x54494E49 /* INITialize */
93 #define ASUS_WMI_METHODID_HKEY 0x59454B48 /* Hot KEY ?? */
95 #define ASUS_WMI_UNSUPPORTED_METHOD 0xFFFFFFFE
98 #define ASUS_WMI_DEVID_HW_SWITCH 0x00010001
99 #define ASUS_WMI_DEVID_WIRELESS_LED 0x00010002
100 #define ASUS_WMI_DEVID_CWAP 0x00010003
101 #define ASUS_WMI_DEVID_WLAN 0x00010011
102 #define ASUS_WMI_DEVID_WLAN_LED 0x00010012
103 #define ASUS_WMI_DEVID_BLUETOOTH 0x00010013
104 #define ASUS_WMI_DEVID_GPS 0x00010015
105 #define ASUS_WMI_DEVID_WIMAX 0x00010017
106 #define ASUS_WMI_DEVID_WWAN3G 0x00010019
107 #define ASUS_WMI_DEVID_UWB 0x00010021
110 /* 0x000200XX and 0x000400XX */
111 #define ASUS_WMI_DEVID_LED1 0x00020011
112 #define ASUS_WMI_DEVID_LED2 0x00020012
113 #define ASUS_WMI_DEVID_LED3 0x00020013
114 #define ASUS_WMI_DEVID_LED4 0x00020014
115 #define ASUS_WMI_DEVID_LED5 0x00020015
116 #define ASUS_WMI_DEVID_LED6 0x00020016
118 /* Backlight and Brightness */
119 #define ASUS_WMI_DEVID_BACKLIGHT 0x00050011
120 #define ASUS_WMI_DEVID_BRIGHTNESS 0x00050012
121 #define ASUS_WMI_DEVID_KBD_BACKLIGHT 0x00050021
122 #define ASUS_WMI_DEVID_LIGHT_SENSOR 0x00050022 /* ?? */
125 #define ASUS_WMI_DEVID_CAMERA 0x00060013
128 #define ASUS_WMI_DEVID_CARDREADER 0x00080013
131 #define ASUS_WMI_DEVID_TOUCHPAD 0x00100011
132 #define ASUS_WMI_DEVID_TOUCHPAD_LED 0x00100012
135 #define ASUS_WMI_DEVID_THERMAL_CTRL 0x00110011
136 #define ASUS_WMI_DEVID_FAN_CTRL 0x00110012
139 #define ASUS_WMI_DEVID_PROCESSOR_STATE 0x00120012
141 /* Deep S3 / Resume on LID open */
142 #define ASUS_WMI_DEVID_LID_RESUME 0x00120031
145 #define ASUS_WMI_DSTS_STATUS_BIT 0x00000001
146 #define ASUS_WMI_DSTS_UNKNOWN_BIT 0x00000002
147 #define ASUS_WMI_DSTS_PRESENCE_BIT 0x00010000
148 #define ASUS_WMI_DSTS_USER_BIT 0x00020000
149 #define ASUS_WMI_DSTS_BIOS_BIT 0x00040000
150 #define ASUS_WMI_DSTS_BRIGHTNESS_MASK 0x000000FF
151 #define ASUS_WMI_DSTS_MAX_BRIGTH_MASK 0x0000FF00
159 * <platform>/ - debugfs root directory
160 * dev_id - current dev_id
161 * ctrl_param - current ctrl_param
162 * method_id - current method_id
163 * devs - call DEVS(dev_id, ctrl_param) and print result
164 * dsts - call DSTS(dev_id) and print result
165 * call - call method_id(dev_id, ctrl_param) and print result
167 struct asus_wmi_debug {
175 struct asus_wmi *asus;
176 struct rfkill *rfkill;
185 struct input_dev *inputdev;
186 struct backlight_device *backlight_device;
187 struct device *hwmon_device;
188 struct platform_device *platform_device;
190 struct led_classdev tpd_led;
192 struct led_classdev kbd_led;
194 struct workqueue_struct *led_workqueue;
195 struct work_struct tpd_led_work;
196 struct work_struct kbd_led_work;
198 struct asus_rfkill wlan;
199 struct asus_rfkill bluetooth;
200 struct asus_rfkill wimax;
201 struct asus_rfkill wwan3g;
202 struct asus_rfkill gps;
203 struct asus_rfkill uwb;
205 struct hotplug_slot *hotplug_slot;
206 struct mutex hotplug_lock;
207 struct mutex wmi_lock;
208 struct workqueue_struct *hotplug_workqueue;
209 struct work_struct hotplug_work;
211 struct asus_wmi_debug debug;
213 struct asus_wmi_driver *driver;
216 static int asus_wmi_input_init(struct asus_wmi *asus)
220 asus->inputdev = input_allocate_device();
224 asus->inputdev->name = asus->driver->input_name;
225 asus->inputdev->phys = asus->driver->input_phys;
226 asus->inputdev->id.bustype = BUS_HOST;
227 asus->inputdev->dev.parent = &asus->platform_device->dev;
228 set_bit(EV_REP, asus->inputdev->evbit);
230 err = sparse_keymap_setup(asus->inputdev, asus->driver->keymap, NULL);
234 err = input_register_device(asus->inputdev);
236 goto err_free_keymap;
241 sparse_keymap_free(asus->inputdev);
243 input_free_device(asus->inputdev);
247 static void asus_wmi_input_exit(struct asus_wmi *asus)
249 if (asus->inputdev) {
250 sparse_keymap_free(asus->inputdev);
251 input_unregister_device(asus->inputdev);
254 asus->inputdev = NULL;
257 static int asus_wmi_evaluate_method(u32 method_id, u32 arg0, u32 arg1,
260 struct bios_args args = {
264 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
265 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
267 union acpi_object *obj;
270 status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID, 1, method_id,
273 if (ACPI_FAILURE(status))
276 obj = (union acpi_object *)output.pointer;
277 if (obj && obj->type == ACPI_TYPE_INTEGER)
278 tmp = (u32) obj->integer.value;
288 if (ACPI_FAILURE(status))
291 if (tmp == ASUS_WMI_UNSUPPORTED_METHOD)
297 static int asus_wmi_get_devstate(struct asus_wmi *asus, u32 dev_id, u32 *retval)
299 return asus_wmi_evaluate_method(asus->dsts_id, dev_id, 0, retval);
302 static int asus_wmi_set_devstate(u32 dev_id, u32 ctrl_param,
305 return asus_wmi_evaluate_method(ASUS_WMI_METHODID_DEVS, dev_id,
309 /* Helper for special devices with magic return codes */
310 static int asus_wmi_get_devstate_bits(struct asus_wmi *asus,
311 u32 dev_id, u32 mask)
316 err = asus_wmi_get_devstate(asus, dev_id, &retval);
321 if (!(retval & ASUS_WMI_DSTS_PRESENCE_BIT))
324 if (mask == ASUS_WMI_DSTS_STATUS_BIT) {
325 if (retval & ASUS_WMI_DSTS_UNKNOWN_BIT)
329 return retval & mask;
332 static int asus_wmi_get_devstate_simple(struct asus_wmi *asus, u32 dev_id)
334 return asus_wmi_get_devstate_bits(asus, dev_id,
335 ASUS_WMI_DSTS_STATUS_BIT);
342 * These functions actually update the LED's, and are called from a
343 * workqueue. By doing this as separate work rather than when the LED
344 * subsystem asks, we avoid messing with the Asus ACPI stuff during a
345 * potentially bad time, such as a timer interrupt.
347 static void tpd_led_update(struct work_struct *work)
350 struct asus_wmi *asus;
352 asus = container_of(work, struct asus_wmi, tpd_led_work);
354 ctrl_param = asus->tpd_led_wk;
355 asus_wmi_set_devstate(ASUS_WMI_DEVID_TOUCHPAD_LED, ctrl_param, NULL);
358 static void tpd_led_set(struct led_classdev *led_cdev,
359 enum led_brightness value)
361 struct asus_wmi *asus;
363 asus = container_of(led_cdev, struct asus_wmi, tpd_led);
365 asus->tpd_led_wk = !!value;
366 queue_work(asus->led_workqueue, &asus->tpd_led_work);
369 static int read_tpd_led_state(struct asus_wmi *asus)
371 return asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_TOUCHPAD_LED);
374 static enum led_brightness tpd_led_get(struct led_classdev *led_cdev)
376 struct asus_wmi *asus;
378 asus = container_of(led_cdev, struct asus_wmi, tpd_led);
380 return read_tpd_led_state(asus);
383 static void kbd_led_update(struct work_struct *work)
386 struct asus_wmi *asus;
388 asus = container_of(work, struct asus_wmi, kbd_led_work);
392 * bit 7: light on/off
394 if (asus->kbd_led_wk > 0)
395 ctrl_param = 0x80 | (asus->kbd_led_wk & 0x7F);
397 asus_wmi_set_devstate(ASUS_WMI_DEVID_KBD_BACKLIGHT, ctrl_param, NULL);
400 static int kbd_led_read(struct asus_wmi *asus, int *level, int *env)
406 * bit 7: light on/off
407 * bit 8-10: environment (0: dark, 1: normal, 2: light)
408 * bit 17: status unknown
410 retval = asus_wmi_get_devstate_bits(asus, ASUS_WMI_DEVID_KBD_BACKLIGHT,
413 /* Unknown status is considered as off */
414 if (retval == 0x8000)
419 *level = retval & 0x7F;
421 *env = (retval >> 8) & 0x7F;
428 static void kbd_led_set(struct led_classdev *led_cdev,
429 enum led_brightness value)
431 struct asus_wmi *asus;
433 asus = container_of(led_cdev, struct asus_wmi, kbd_led);
435 if (value > asus->kbd_led.max_brightness)
436 value = asus->kbd_led.max_brightness;
440 asus->kbd_led_wk = value;
441 queue_work(asus->led_workqueue, &asus->kbd_led_work);
444 static enum led_brightness kbd_led_get(struct led_classdev *led_cdev)
446 struct asus_wmi *asus;
449 asus = container_of(led_cdev, struct asus_wmi, kbd_led);
451 retval = kbd_led_read(asus, &value, NULL);
459 static void asus_wmi_led_exit(struct asus_wmi *asus)
461 if (!IS_ERR_OR_NULL(asus->kbd_led.dev))
462 led_classdev_unregister(&asus->kbd_led);
463 if (!IS_ERR_OR_NULL(asus->tpd_led.dev))
464 led_classdev_unregister(&asus->tpd_led);
465 if (asus->led_workqueue)
466 destroy_workqueue(asus->led_workqueue);
469 static int asus_wmi_led_init(struct asus_wmi *asus)
473 asus->led_workqueue = create_singlethread_workqueue("led_workqueue");
474 if (!asus->led_workqueue)
477 if (read_tpd_led_state(asus) >= 0) {
478 INIT_WORK(&asus->tpd_led_work, tpd_led_update);
480 asus->tpd_led.name = "asus::touchpad";
481 asus->tpd_led.brightness_set = tpd_led_set;
482 asus->tpd_led.brightness_get = tpd_led_get;
483 asus->tpd_led.max_brightness = 1;
485 rv = led_classdev_register(&asus->platform_device->dev,
491 if (kbd_led_read(asus, NULL, NULL) >= 0) {
492 INIT_WORK(&asus->kbd_led_work, kbd_led_update);
494 asus->kbd_led.name = "asus::kbd_backlight";
495 asus->kbd_led.brightness_set = kbd_led_set;
496 asus->kbd_led.brightness_get = kbd_led_get;
497 asus->kbd_led.max_brightness = 3;
499 rv = led_classdev_register(&asus->platform_device->dev,
505 asus_wmi_led_exit(asus);
512 * PCI hotplug (for wlan rfkill)
514 static bool asus_wlan_rfkill_blocked(struct asus_wmi *asus)
516 int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
523 static void asus_rfkill_hotplug(struct asus_wmi *asus)
531 mutex_lock(&asus->wmi_lock);
532 blocked = asus_wlan_rfkill_blocked(asus);
533 mutex_unlock(&asus->wmi_lock);
535 mutex_lock(&asus->hotplug_lock);
537 if (asus->wlan.rfkill)
538 rfkill_set_sw_state(asus->wlan.rfkill, blocked);
540 if (asus->hotplug_slot) {
541 bus = pci_find_bus(0, 1);
543 pr_warn("Unable to find PCI bus 1?\n");
547 if (pci_bus_read_config_dword(bus, 0, PCI_VENDOR_ID, &l)) {
548 pr_err("Unable to read PCI config space?\n");
551 absent = (l == 0xffffffff);
553 if (blocked != absent) {
554 pr_warn("BIOS says wireless lan is %s, "
555 "but the pci device is %s\n",
556 blocked ? "blocked" : "unblocked",
557 absent ? "absent" : "present");
558 pr_warn("skipped wireless hotplug as probably "
559 "inappropriate for this model\n");
564 dev = pci_get_slot(bus, 0);
566 /* Device already present */
570 dev = pci_scan_single_device(bus, 0);
572 pci_bus_assign_resources(bus);
573 if (pci_bus_add_device(dev))
574 pr_err("Unable to hotplug wifi\n");
577 dev = pci_get_slot(bus, 0);
579 pci_stop_and_remove_bus_device(dev);
586 mutex_unlock(&asus->hotplug_lock);
589 static void asus_rfkill_notify(acpi_handle handle, u32 event, void *data)
591 struct asus_wmi *asus = data;
593 if (event != ACPI_NOTIFY_BUS_CHECK)
597 * We can't call directly asus_rfkill_hotplug because most
598 * of the time WMBC is still being executed and not reetrant.
599 * There is currently no way to tell ACPICA that we want this
600 * method to be serialized, we schedule a asus_rfkill_hotplug
601 * call later, in a safer context.
603 queue_work(asus->hotplug_workqueue, &asus->hotplug_work);
606 static int asus_register_rfkill_notifier(struct asus_wmi *asus, char *node)
611 status = acpi_get_handle(NULL, node, &handle);
613 if (ACPI_SUCCESS(status)) {
614 status = acpi_install_notify_handler(handle,
616 asus_rfkill_notify, asus);
617 if (ACPI_FAILURE(status))
618 pr_warn("Failed to register notify on %s\n", node);
625 static void asus_unregister_rfkill_notifier(struct asus_wmi *asus, char *node)
627 acpi_status status = AE_OK;
630 status = acpi_get_handle(NULL, node, &handle);
632 if (ACPI_SUCCESS(status)) {
633 status = acpi_remove_notify_handler(handle,
636 if (ACPI_FAILURE(status))
637 pr_err("Error removing rfkill notify handler %s\n",
642 static int asus_get_adapter_status(struct hotplug_slot *hotplug_slot,
645 struct asus_wmi *asus = hotplug_slot->private;
646 int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
655 static void asus_cleanup_pci_hotplug(struct hotplug_slot *hotplug_slot)
657 kfree(hotplug_slot->info);
661 static struct hotplug_slot_ops asus_hotplug_slot_ops = {
662 .owner = THIS_MODULE,
663 .get_adapter_status = asus_get_adapter_status,
664 .get_power_status = asus_get_adapter_status,
667 static void asus_hotplug_work(struct work_struct *work)
669 struct asus_wmi *asus;
671 asus = container_of(work, struct asus_wmi, hotplug_work);
672 asus_rfkill_hotplug(asus);
675 static int asus_setup_pci_hotplug(struct asus_wmi *asus)
678 struct pci_bus *bus = pci_find_bus(0, 1);
681 pr_err("Unable to find wifi PCI bus\n");
685 asus->hotplug_workqueue =
686 create_singlethread_workqueue("hotplug_workqueue");
687 if (!asus->hotplug_workqueue)
688 goto error_workqueue;
690 INIT_WORK(&asus->hotplug_work, asus_hotplug_work);
692 asus->hotplug_slot = kzalloc(sizeof(struct hotplug_slot), GFP_KERNEL);
693 if (!asus->hotplug_slot)
696 asus->hotplug_slot->info = kzalloc(sizeof(struct hotplug_slot_info),
698 if (!asus->hotplug_slot->info)
701 asus->hotplug_slot->private = asus;
702 asus->hotplug_slot->release = &asus_cleanup_pci_hotplug;
703 asus->hotplug_slot->ops = &asus_hotplug_slot_ops;
704 asus_get_adapter_status(asus->hotplug_slot,
705 &asus->hotplug_slot->info->adapter_status);
707 ret = pci_hp_register(asus->hotplug_slot, bus, 0, "asus-wifi");
709 pr_err("Unable to register hotplug slot - %d\n", ret);
716 kfree(asus->hotplug_slot->info);
718 kfree(asus->hotplug_slot);
719 asus->hotplug_slot = NULL;
721 destroy_workqueue(asus->hotplug_workqueue);
729 static int asus_rfkill_set(void *data, bool blocked)
731 struct asus_rfkill *priv = data;
732 u32 ctrl_param = !blocked;
733 u32 dev_id = priv->dev_id;
736 * If the user bit is set, BIOS can't set and record the wlan status,
737 * it will report the value read from id ASUS_WMI_DEVID_WLAN_LED
738 * while we query the wlan status through WMI(ASUS_WMI_DEVID_WLAN).
739 * So, we have to record wlan status in id ASUS_WMI_DEVID_WLAN_LED
740 * while setting the wlan status through WMI.
741 * This is also the behavior that windows app will do.
743 if ((dev_id == ASUS_WMI_DEVID_WLAN) &&
744 priv->asus->driver->wlan_ctrl_by_user)
745 dev_id = ASUS_WMI_DEVID_WLAN_LED;
747 return asus_wmi_set_devstate(dev_id, ctrl_param, NULL);
750 static void asus_rfkill_query(struct rfkill *rfkill, void *data)
752 struct asus_rfkill *priv = data;
755 result = asus_wmi_get_devstate_simple(priv->asus, priv->dev_id);
760 rfkill_set_sw_state(priv->rfkill, !result);
763 static int asus_rfkill_wlan_set(void *data, bool blocked)
765 struct asus_rfkill *priv = data;
766 struct asus_wmi *asus = priv->asus;
770 * This handler is enabled only if hotplug is enabled.
771 * In this case, the asus_wmi_set_devstate() will
772 * trigger a wmi notification and we need to wait
773 * this call to finish before being able to call
776 mutex_lock(&asus->wmi_lock);
777 ret = asus_rfkill_set(data, blocked);
778 mutex_unlock(&asus->wmi_lock);
782 static const struct rfkill_ops asus_rfkill_wlan_ops = {
783 .set_block = asus_rfkill_wlan_set,
784 .query = asus_rfkill_query,
787 static const struct rfkill_ops asus_rfkill_ops = {
788 .set_block = asus_rfkill_set,
789 .query = asus_rfkill_query,
792 static int asus_new_rfkill(struct asus_wmi *asus,
793 struct asus_rfkill *arfkill,
794 const char *name, enum rfkill_type type, int dev_id)
796 int result = asus_wmi_get_devstate_simple(asus, dev_id);
797 struct rfkill **rfkill = &arfkill->rfkill;
802 arfkill->dev_id = dev_id;
803 arfkill->asus = asus;
805 if (dev_id == ASUS_WMI_DEVID_WLAN &&
806 asus->driver->quirks->hotplug_wireless)
807 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type,
808 &asus_rfkill_wlan_ops, arfkill);
810 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type,
811 &asus_rfkill_ops, arfkill);
816 rfkill_init_sw_state(*rfkill, !result);
817 result = rfkill_register(*rfkill);
819 rfkill_destroy(*rfkill);
826 static void asus_wmi_rfkill_exit(struct asus_wmi *asus)
828 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P5");
829 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P6");
830 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P7");
831 if (asus->wlan.rfkill) {
832 rfkill_unregister(asus->wlan.rfkill);
833 rfkill_destroy(asus->wlan.rfkill);
834 asus->wlan.rfkill = NULL;
837 * Refresh pci hotplug in case the rfkill state was changed after
838 * asus_unregister_rfkill_notifier()
840 asus_rfkill_hotplug(asus);
841 if (asus->hotplug_slot)
842 pci_hp_deregister(asus->hotplug_slot);
843 if (asus->hotplug_workqueue)
844 destroy_workqueue(asus->hotplug_workqueue);
846 if (asus->bluetooth.rfkill) {
847 rfkill_unregister(asus->bluetooth.rfkill);
848 rfkill_destroy(asus->bluetooth.rfkill);
849 asus->bluetooth.rfkill = NULL;
851 if (asus->wimax.rfkill) {
852 rfkill_unregister(asus->wimax.rfkill);
853 rfkill_destroy(asus->wimax.rfkill);
854 asus->wimax.rfkill = NULL;
856 if (asus->wwan3g.rfkill) {
857 rfkill_unregister(asus->wwan3g.rfkill);
858 rfkill_destroy(asus->wwan3g.rfkill);
859 asus->wwan3g.rfkill = NULL;
861 if (asus->gps.rfkill) {
862 rfkill_unregister(asus->gps.rfkill);
863 rfkill_destroy(asus->gps.rfkill);
864 asus->gps.rfkill = NULL;
866 if (asus->uwb.rfkill) {
867 rfkill_unregister(asus->uwb.rfkill);
868 rfkill_destroy(asus->uwb.rfkill);
869 asus->uwb.rfkill = NULL;
873 static int asus_wmi_rfkill_init(struct asus_wmi *asus)
877 mutex_init(&asus->hotplug_lock);
878 mutex_init(&asus->wmi_lock);
880 result = asus_new_rfkill(asus, &asus->wlan, "asus-wlan",
881 RFKILL_TYPE_WLAN, ASUS_WMI_DEVID_WLAN);
883 if (result && result != -ENODEV)
886 result = asus_new_rfkill(asus, &asus->bluetooth,
887 "asus-bluetooth", RFKILL_TYPE_BLUETOOTH,
888 ASUS_WMI_DEVID_BLUETOOTH);
890 if (result && result != -ENODEV)
893 result = asus_new_rfkill(asus, &asus->wimax, "asus-wimax",
894 RFKILL_TYPE_WIMAX, ASUS_WMI_DEVID_WIMAX);
896 if (result && result != -ENODEV)
899 result = asus_new_rfkill(asus, &asus->wwan3g, "asus-wwan3g",
900 RFKILL_TYPE_WWAN, ASUS_WMI_DEVID_WWAN3G);
902 if (result && result != -ENODEV)
905 result = asus_new_rfkill(asus, &asus->gps, "asus-gps",
906 RFKILL_TYPE_GPS, ASUS_WMI_DEVID_GPS);
908 if (result && result != -ENODEV)
911 result = asus_new_rfkill(asus, &asus->uwb, "asus-uwb",
912 RFKILL_TYPE_UWB, ASUS_WMI_DEVID_UWB);
914 if (result && result != -ENODEV)
917 if (!asus->driver->quirks->hotplug_wireless)
920 result = asus_setup_pci_hotplug(asus);
922 * If we get -EBUSY then something else is handling the PCI hotplug -
923 * don't fail in this case
925 if (result == -EBUSY)
928 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P5");
929 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P6");
930 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P7");
932 * Refresh pci hotplug in case the rfkill state was changed during
935 asus_rfkill_hotplug(asus);
938 if (result && result != -ENODEV)
939 asus_wmi_rfkill_exit(asus);
941 if (result == -ENODEV)
950 static ssize_t asus_hwmon_pwm1(struct device *dev,
951 struct device_attribute *attr,
954 struct asus_wmi *asus = dev_get_drvdata(dev);
958 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FAN_CTRL, &value);
965 if (value == 1) /* Low Speed */
971 else if (value != 0) {
972 pr_err("Unknown fan speed %#x", value);
976 return sprintf(buf, "%d\n", value);
979 static ssize_t asus_hwmon_temp1(struct device *dev,
980 struct device_attribute *attr,
983 struct asus_wmi *asus = dev_get_drvdata(dev);
987 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_THERMAL_CTRL, &value);
992 value = KELVIN_TO_CELSIUS((value & 0xFFFF)) * 1000;
994 return sprintf(buf, "%d\n", value);
997 static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO, asus_hwmon_pwm1, NULL, 0);
998 static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, asus_hwmon_temp1, NULL, 0);
1001 show_name(struct device *dev, struct device_attribute *attr, char *buf)
1003 return sprintf(buf, "asus\n");
1005 static SENSOR_DEVICE_ATTR(name, S_IRUGO, show_name, NULL, 0);
1007 static struct attribute *hwmon_attributes[] = {
1008 &sensor_dev_attr_pwm1.dev_attr.attr,
1009 &sensor_dev_attr_temp1_input.dev_attr.attr,
1010 &sensor_dev_attr_name.dev_attr.attr,
1014 static umode_t asus_hwmon_sysfs_is_visible(struct kobject *kobj,
1015 struct attribute *attr, int idx)
1017 struct device *dev = container_of(kobj, struct device, kobj);
1018 struct platform_device *pdev = to_platform_device(dev->parent);
1019 struct asus_wmi *asus = platform_get_drvdata(pdev);
1022 u32 value = ASUS_WMI_UNSUPPORTED_METHOD;
1024 if (attr == &sensor_dev_attr_pwm1.dev_attr.attr)
1025 dev_id = ASUS_WMI_DEVID_FAN_CTRL;
1026 else if (attr == &sensor_dev_attr_temp1_input.dev_attr.attr)
1027 dev_id = ASUS_WMI_DEVID_THERMAL_CTRL;
1030 int err = asus_wmi_get_devstate(asus, dev_id, &value);
1033 return 0; /* can't return negative here */
1036 if (dev_id == ASUS_WMI_DEVID_FAN_CTRL) {
1038 * We need to find a better way, probably using sfun,
1040 * Currently we disable it if:
1041 * - ASUS_WMI_UNSUPPORTED_METHOD is returned
1042 * - reverved bits are non-zero
1043 * - sfun and presence bit are not set
1045 if (value == ASUS_WMI_UNSUPPORTED_METHOD || value & 0xFFF80000
1046 || (!asus->sfun && !(value & ASUS_WMI_DSTS_PRESENCE_BIT)))
1048 } else if (dev_id == ASUS_WMI_DEVID_THERMAL_CTRL) {
1049 /* If value is zero, something is clearly wrong */
1054 return ok ? attr->mode : 0;
1057 static struct attribute_group hwmon_attribute_group = {
1058 .is_visible = asus_hwmon_sysfs_is_visible,
1059 .attrs = hwmon_attributes
1062 static void asus_wmi_hwmon_exit(struct asus_wmi *asus)
1064 struct device *hwmon;
1066 hwmon = asus->hwmon_device;
1069 sysfs_remove_group(&hwmon->kobj, &hwmon_attribute_group);
1070 hwmon_device_unregister(hwmon);
1071 asus->hwmon_device = NULL;
1074 static int asus_wmi_hwmon_init(struct asus_wmi *asus)
1076 struct device *hwmon;
1079 hwmon = hwmon_device_register(&asus->platform_device->dev);
1080 if (IS_ERR(hwmon)) {
1081 pr_err("Could not register asus hwmon device\n");
1082 return PTR_ERR(hwmon);
1084 dev_set_drvdata(hwmon, asus);
1085 asus->hwmon_device = hwmon;
1086 result = sysfs_create_group(&hwmon->kobj, &hwmon_attribute_group);
1088 asus_wmi_hwmon_exit(asus);
1095 static int read_backlight_power(struct asus_wmi *asus)
1098 if (asus->driver->quirks->store_backlight_power)
1099 ret = !asus->driver->panel_power;
1101 ret = asus_wmi_get_devstate_simple(asus,
1102 ASUS_WMI_DEVID_BACKLIGHT);
1107 return ret ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN;
1110 static int read_brightness_max(struct asus_wmi *asus)
1115 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval);
1120 retval = retval & ASUS_WMI_DSTS_MAX_BRIGTH_MASK;
1129 static int read_brightness(struct backlight_device *bd)
1131 struct asus_wmi *asus = bl_get_data(bd);
1135 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval);
1140 return retval & ASUS_WMI_DSTS_BRIGHTNESS_MASK;
1143 static u32 get_scalar_command(struct backlight_device *bd)
1145 struct asus_wmi *asus = bl_get_data(bd);
1148 if ((asus->driver->brightness < bd->props.brightness) ||
1149 bd->props.brightness == bd->props.max_brightness)
1150 ctrl_param = 0x00008001;
1151 else if ((asus->driver->brightness > bd->props.brightness) ||
1152 bd->props.brightness == 0)
1153 ctrl_param = 0x00008000;
1155 asus->driver->brightness = bd->props.brightness;
1160 static int update_bl_status(struct backlight_device *bd)
1162 struct asus_wmi *asus = bl_get_data(bd);
1166 power = read_backlight_power(asus);
1167 if (power != -ENODEV && bd->props.power != power) {
1168 ctrl_param = !!(bd->props.power == FB_BLANK_UNBLANK);
1169 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BACKLIGHT,
1171 if (asus->driver->quirks->store_backlight_power)
1172 asus->driver->panel_power = bd->props.power;
1174 /* When using scalar brightness, updating the brightness
1175 * will mess with the backlight power */
1176 if (asus->driver->quirks->scalar_panel_brightness)
1180 if (asus->driver->quirks->scalar_panel_brightness)
1181 ctrl_param = get_scalar_command(bd);
1183 ctrl_param = bd->props.brightness;
1185 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BRIGHTNESS,
1191 static const struct backlight_ops asus_wmi_bl_ops = {
1192 .get_brightness = read_brightness,
1193 .update_status = update_bl_status,
1196 static int asus_wmi_backlight_notify(struct asus_wmi *asus, int code)
1198 struct backlight_device *bd = asus->backlight_device;
1199 int old = bd->props.brightness;
1202 if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX)
1203 new = code - NOTIFY_BRNUP_MIN + 1;
1204 else if (code >= NOTIFY_BRNDOWN_MIN && code <= NOTIFY_BRNDOWN_MAX)
1205 new = code - NOTIFY_BRNDOWN_MIN;
1207 bd->props.brightness = new;
1208 backlight_update_status(bd);
1209 backlight_force_update(bd, BACKLIGHT_UPDATE_HOTKEY);
1214 static int asus_wmi_backlight_init(struct asus_wmi *asus)
1216 struct backlight_device *bd;
1217 struct backlight_properties props;
1221 max = read_brightness_max(asus);
1228 power = read_backlight_power(asus);
1230 if (power == -ENODEV)
1231 power = FB_BLANK_UNBLANK;
1235 memset(&props, 0, sizeof(struct backlight_properties));
1236 props.type = BACKLIGHT_PLATFORM;
1237 props.max_brightness = max;
1238 bd = backlight_device_register(asus->driver->name,
1239 &asus->platform_device->dev, asus,
1240 &asus_wmi_bl_ops, &props);
1242 pr_err("Could not register backlight device\n");
1246 asus->backlight_device = bd;
1248 if (asus->driver->quirks->store_backlight_power)
1249 asus->driver->panel_power = power;
1251 bd->props.brightness = read_brightness(bd);
1252 bd->props.power = power;
1253 backlight_update_status(bd);
1255 asus->driver->brightness = bd->props.brightness;
1260 static void asus_wmi_backlight_exit(struct asus_wmi *asus)
1262 if (asus->backlight_device)
1263 backlight_device_unregister(asus->backlight_device);
1265 asus->backlight_device = NULL;
1268 static void asus_wmi_notify(u32 value, void *context)
1270 struct asus_wmi *asus = context;
1271 struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
1272 union acpi_object *obj;
1276 unsigned int key_value = 1;
1277 bool autorelease = 1;
1279 status = wmi_get_event_data(value, &response);
1280 if (status != AE_OK) {
1281 pr_err("bad event status 0x%x\n", status);
1285 obj = (union acpi_object *)response.pointer;
1287 if (!obj || obj->type != ACPI_TYPE_INTEGER)
1290 code = obj->integer.value;
1293 if (asus->driver->key_filter) {
1294 asus->driver->key_filter(asus->driver, &code, &key_value,
1296 if (code == ASUS_WMI_KEY_IGNORE)
1300 if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX)
1301 code = NOTIFY_BRNUP_MIN;
1302 else if (code >= NOTIFY_BRNDOWN_MIN &&
1303 code <= NOTIFY_BRNDOWN_MAX)
1304 code = NOTIFY_BRNDOWN_MIN;
1306 if (code == NOTIFY_BRNUP_MIN || code == NOTIFY_BRNDOWN_MIN) {
1307 if (!acpi_video_backlight_support())
1308 asus_wmi_backlight_notify(asus, orig_code);
1309 } else if (!sparse_keymap_report_event(asus->inputdev, code,
1310 key_value, autorelease))
1311 pr_info("Unknown key %x pressed\n", code);
1320 static int parse_arg(const char *buf, unsigned long count, int *val)
1324 if (sscanf(buf, "%i", val) != 1)
1329 static ssize_t store_sys_wmi(struct asus_wmi *asus, int devid,
1330 const char *buf, size_t count)
1335 value = asus_wmi_get_devstate_simple(asus, devid);
1336 if (value == -ENODEV) /* Check device presence */
1339 rv = parse_arg(buf, count, &value);
1340 err = asus_wmi_set_devstate(devid, value, &retval);
1348 static ssize_t show_sys_wmi(struct asus_wmi *asus, int devid, char *buf)
1350 int value = asus_wmi_get_devstate_simple(asus, devid);
1355 return sprintf(buf, "%d\n", value);
1358 #define ASUS_WMI_CREATE_DEVICE_ATTR(_name, _mode, _cm) \
1359 static ssize_t show_##_name(struct device *dev, \
1360 struct device_attribute *attr, \
1363 struct asus_wmi *asus = dev_get_drvdata(dev); \
1365 return show_sys_wmi(asus, _cm, buf); \
1367 static ssize_t store_##_name(struct device *dev, \
1368 struct device_attribute *attr, \
1369 const char *buf, size_t count) \
1371 struct asus_wmi *asus = dev_get_drvdata(dev); \
1373 return store_sys_wmi(asus, _cm, buf, count); \
1375 static struct device_attribute dev_attr_##_name = { \
1377 .name = __stringify(_name), \
1379 .show = show_##_name, \
1380 .store = store_##_name, \
1383 ASUS_WMI_CREATE_DEVICE_ATTR(touchpad, 0644, ASUS_WMI_DEVID_TOUCHPAD);
1384 ASUS_WMI_CREATE_DEVICE_ATTR(camera, 0644, ASUS_WMI_DEVID_CAMERA);
1385 ASUS_WMI_CREATE_DEVICE_ATTR(cardr, 0644, ASUS_WMI_DEVID_CARDREADER);
1386 ASUS_WMI_CREATE_DEVICE_ATTR(lid_resume, 0644, ASUS_WMI_DEVID_LID_RESUME);
1388 static ssize_t store_cpufv(struct device *dev, struct device_attribute *attr,
1389 const char *buf, size_t count)
1393 if (!count || sscanf(buf, "%i", &value) != 1)
1395 if (value < 0 || value > 2)
1398 rv = asus_wmi_evaluate_method(ASUS_WMI_METHODID_CFVS, value, 0, NULL);
1405 static DEVICE_ATTR(cpufv, S_IRUGO | S_IWUSR, NULL, store_cpufv);
1407 static struct attribute *platform_attributes[] = {
1408 &dev_attr_cpufv.attr,
1409 &dev_attr_camera.attr,
1410 &dev_attr_cardr.attr,
1411 &dev_attr_touchpad.attr,
1412 &dev_attr_lid_resume.attr,
1416 static umode_t asus_sysfs_is_visible(struct kobject *kobj,
1417 struct attribute *attr, int idx)
1419 struct device *dev = container_of(kobj, struct device, kobj);
1420 struct platform_device *pdev = to_platform_device(dev);
1421 struct asus_wmi *asus = platform_get_drvdata(pdev);
1425 if (attr == &dev_attr_camera.attr)
1426 devid = ASUS_WMI_DEVID_CAMERA;
1427 else if (attr == &dev_attr_cardr.attr)
1428 devid = ASUS_WMI_DEVID_CARDREADER;
1429 else if (attr == &dev_attr_touchpad.attr)
1430 devid = ASUS_WMI_DEVID_TOUCHPAD;
1431 else if (attr == &dev_attr_lid_resume.attr)
1432 devid = ASUS_WMI_DEVID_LID_RESUME;
1435 ok = !(asus_wmi_get_devstate_simple(asus, devid) < 0);
1437 return ok ? attr->mode : 0;
1440 static struct attribute_group platform_attribute_group = {
1441 .is_visible = asus_sysfs_is_visible,
1442 .attrs = platform_attributes
1445 static void asus_wmi_sysfs_exit(struct platform_device *device)
1447 sysfs_remove_group(&device->dev.kobj, &platform_attribute_group);
1450 static int asus_wmi_sysfs_init(struct platform_device *device)
1452 return sysfs_create_group(&device->dev.kobj, &platform_attribute_group);
1458 static int asus_wmi_platform_init(struct asus_wmi *asus)
1462 /* INIT enable hotkeys on some models */
1463 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_INIT, 0, 0, &rv))
1464 pr_info("Initialization: %#x", rv);
1466 /* We don't know yet what to do with this version... */
1467 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SPEC, 0, 0x9, &rv)) {
1468 pr_info("BIOS WMI version: %d.%d", rv >> 16, rv & 0xFF);
1473 * The SFUN method probably allows the original driver to get the list
1474 * of features supported by a given model. For now, 0x0100 or 0x0800
1475 * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card.
1476 * The significance of others is yet to be found.
1478 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SFUN, 0, 0, &rv)) {
1479 pr_info("SFUN value: %#x", rv);
1484 * Eee PC and Notebooks seems to have different method_id for DSTS,
1485 * but it may also be related to the BIOS's SPEC.
1486 * Note, on most Eeepc, there is no way to check if a method exist
1487 * or note, while on notebooks, they returns 0xFFFFFFFE on failure,
1488 * but once again, SPEC may probably be used for that kind of things.
1490 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_DSTS, 0, 0, NULL))
1491 asus->dsts_id = ASUS_WMI_METHODID_DSTS;
1493 asus->dsts_id = ASUS_WMI_METHODID_DSTS2;
1495 /* CWAP allow to define the behavior of the Fn+F2 key,
1496 * this method doesn't seems to be present on Eee PCs */
1497 if (asus->driver->quirks->wapf >= 0)
1498 asus_wmi_set_devstate(ASUS_WMI_DEVID_CWAP,
1499 asus->driver->quirks->wapf, NULL);
1501 return asus_wmi_sysfs_init(asus->platform_device);
1504 static void asus_wmi_platform_exit(struct asus_wmi *asus)
1506 asus_wmi_sysfs_exit(asus->platform_device);
1512 struct asus_wmi_debugfs_node {
1513 struct asus_wmi *asus;
1515 int (*show) (struct seq_file *m, void *data);
1518 static int show_dsts(struct seq_file *m, void *data)
1520 struct asus_wmi *asus = m->private;
1524 err = asus_wmi_get_devstate(asus, asus->debug.dev_id, &retval);
1529 seq_printf(m, "DSTS(%#x) = %#x\n", asus->debug.dev_id, retval);
1534 static int show_devs(struct seq_file *m, void *data)
1536 struct asus_wmi *asus = m->private;
1540 err = asus_wmi_set_devstate(asus->debug.dev_id, asus->debug.ctrl_param,
1546 seq_printf(m, "DEVS(%#x, %#x) = %#x\n", asus->debug.dev_id,
1547 asus->debug.ctrl_param, retval);
1552 static int show_call(struct seq_file *m, void *data)
1554 struct asus_wmi *asus = m->private;
1555 struct bios_args args = {
1556 .arg0 = asus->debug.dev_id,
1557 .arg1 = asus->debug.ctrl_param,
1559 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
1560 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1561 union acpi_object *obj;
1564 status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID,
1565 1, asus->debug.method_id,
1568 if (ACPI_FAILURE(status))
1571 obj = (union acpi_object *)output.pointer;
1572 if (obj && obj->type == ACPI_TYPE_INTEGER)
1573 seq_printf(m, "%#x(%#x, %#x) = %#x\n", asus->debug.method_id,
1574 asus->debug.dev_id, asus->debug.ctrl_param,
1575 (u32) obj->integer.value);
1577 seq_printf(m, "%#x(%#x, %#x) = t:%d\n", asus->debug.method_id,
1578 asus->debug.dev_id, asus->debug.ctrl_param,
1579 obj ? obj->type : -1);
1586 static struct asus_wmi_debugfs_node asus_wmi_debug_files[] = {
1587 {NULL, "devs", show_devs},
1588 {NULL, "dsts", show_dsts},
1589 {NULL, "call", show_call},
1592 static int asus_wmi_debugfs_open(struct inode *inode, struct file *file)
1594 struct asus_wmi_debugfs_node *node = inode->i_private;
1596 return single_open(file, node->show, node->asus);
1599 static const struct file_operations asus_wmi_debugfs_io_ops = {
1600 .owner = THIS_MODULE,
1601 .open = asus_wmi_debugfs_open,
1603 .llseek = seq_lseek,
1604 .release = single_release,
1607 static void asus_wmi_debugfs_exit(struct asus_wmi *asus)
1609 debugfs_remove_recursive(asus->debug.root);
1612 static int asus_wmi_debugfs_init(struct asus_wmi *asus)
1614 struct dentry *dent;
1617 asus->debug.root = debugfs_create_dir(asus->driver->name, NULL);
1618 if (!asus->debug.root) {
1619 pr_err("failed to create debugfs directory");
1623 dent = debugfs_create_x32("method_id", S_IRUGO | S_IWUSR,
1624 asus->debug.root, &asus->debug.method_id);
1628 dent = debugfs_create_x32("dev_id", S_IRUGO | S_IWUSR,
1629 asus->debug.root, &asus->debug.dev_id);
1633 dent = debugfs_create_x32("ctrl_param", S_IRUGO | S_IWUSR,
1634 asus->debug.root, &asus->debug.ctrl_param);
1638 for (i = 0; i < ARRAY_SIZE(asus_wmi_debug_files); i++) {
1639 struct asus_wmi_debugfs_node *node = &asus_wmi_debug_files[i];
1642 dent = debugfs_create_file(node->name, S_IFREG | S_IRUGO,
1643 asus->debug.root, node,
1644 &asus_wmi_debugfs_io_ops);
1646 pr_err("failed to create debug file: %s\n", node->name);
1654 asus_wmi_debugfs_exit(asus);
1661 static int asus_wmi_add(struct platform_device *pdev)
1663 struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver);
1664 struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv);
1665 struct asus_wmi *asus;
1670 asus = kzalloc(sizeof(struct asus_wmi), GFP_KERNEL);
1674 asus->driver = wdrv;
1675 asus->platform_device = pdev;
1676 wdrv->platform_device = pdev;
1677 platform_set_drvdata(asus->platform_device, asus);
1679 if (wdrv->detect_quirks)
1680 wdrv->detect_quirks(asus->driver);
1682 err = asus_wmi_platform_init(asus);
1686 err = asus_wmi_input_init(asus);
1690 err = asus_wmi_hwmon_init(asus);
1694 err = asus_wmi_led_init(asus);
1698 err = asus_wmi_rfkill_init(asus);
1702 if (asus->driver->quirks->wmi_backlight_power)
1703 acpi_video_dmi_promote_vendor();
1704 if (!acpi_video_backlight_support()) {
1705 pr_info("Disabling ACPI video driver\n");
1706 acpi_video_unregister();
1707 err = asus_wmi_backlight_init(asus);
1708 if (err && err != -ENODEV)
1709 goto fail_backlight;
1711 pr_info("Backlight controlled by ACPI video driver\n");
1713 status = wmi_install_notify_handler(asus->driver->event_guid,
1714 asus_wmi_notify, asus);
1715 if (ACPI_FAILURE(status)) {
1716 pr_err("Unable to register notify handler - %d\n", status);
1718 goto fail_wmi_handler;
1721 err = asus_wmi_debugfs_init(asus);
1725 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WLAN, &result);
1726 if (result & (ASUS_WMI_DSTS_PRESENCE_BIT | ASUS_WMI_DSTS_USER_BIT))
1727 asus->driver->wlan_ctrl_by_user = 1;
1732 wmi_remove_notify_handler(asus->driver->event_guid);
1734 asus_wmi_backlight_exit(asus);
1736 asus_wmi_rfkill_exit(asus);
1738 asus_wmi_led_exit(asus);
1740 asus_wmi_hwmon_exit(asus);
1742 asus_wmi_input_exit(asus);
1744 asus_wmi_platform_exit(asus);
1750 static int asus_wmi_remove(struct platform_device *device)
1752 struct asus_wmi *asus;
1754 asus = platform_get_drvdata(device);
1755 wmi_remove_notify_handler(asus->driver->event_guid);
1756 asus_wmi_backlight_exit(asus);
1757 asus_wmi_input_exit(asus);
1758 asus_wmi_hwmon_exit(asus);
1759 asus_wmi_led_exit(asus);
1760 asus_wmi_rfkill_exit(asus);
1761 asus_wmi_debugfs_exit(asus);
1762 asus_wmi_platform_exit(asus);
1769 * Platform driver - hibernate/resume callbacks
1771 static int asus_hotk_thaw(struct device *device)
1773 struct asus_wmi *asus = dev_get_drvdata(device);
1775 if (asus->wlan.rfkill) {
1779 * Work around bios bug - acpi _PTS turns off the wireless led
1780 * during suspend. Normally it restores it on resume, but
1781 * we should kick it ourselves in case hibernation is aborted.
1783 wlan = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
1784 asus_wmi_set_devstate(ASUS_WMI_DEVID_WLAN, wlan, NULL);
1790 static int asus_hotk_restore(struct device *device)
1792 struct asus_wmi *asus = dev_get_drvdata(device);
1795 /* Refresh both wlan rfkill state and pci hotplug */
1796 if (asus->wlan.rfkill)
1797 asus_rfkill_hotplug(asus);
1799 if (asus->bluetooth.rfkill) {
1800 bl = !asus_wmi_get_devstate_simple(asus,
1801 ASUS_WMI_DEVID_BLUETOOTH);
1802 rfkill_set_sw_state(asus->bluetooth.rfkill, bl);
1804 if (asus->wimax.rfkill) {
1805 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WIMAX);
1806 rfkill_set_sw_state(asus->wimax.rfkill, bl);
1808 if (asus->wwan3g.rfkill) {
1809 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WWAN3G);
1810 rfkill_set_sw_state(asus->wwan3g.rfkill, bl);
1812 if (asus->gps.rfkill) {
1813 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_GPS);
1814 rfkill_set_sw_state(asus->gps.rfkill, bl);
1816 if (asus->uwb.rfkill) {
1817 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_UWB);
1818 rfkill_set_sw_state(asus->uwb.rfkill, bl);
1824 static const struct dev_pm_ops asus_pm_ops = {
1825 .thaw = asus_hotk_thaw,
1826 .restore = asus_hotk_restore,
1829 static int asus_wmi_probe(struct platform_device *pdev)
1831 struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver);
1832 struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv);
1835 if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) {
1836 pr_warn("Management GUID not found\n");
1840 if (wdrv->event_guid && !wmi_has_guid(wdrv->event_guid)) {
1841 pr_warn("Event GUID not found\n");
1846 ret = wdrv->probe(pdev);
1851 return asus_wmi_add(pdev);
1856 int __init_or_module asus_wmi_register_driver(struct asus_wmi_driver *driver)
1858 struct platform_driver *platform_driver;
1859 struct platform_device *platform_device;
1864 platform_driver = &driver->platform_driver;
1865 platform_driver->remove = asus_wmi_remove;
1866 platform_driver->driver.owner = driver->owner;
1867 platform_driver->driver.name = driver->name;
1868 platform_driver->driver.pm = &asus_pm_ops;
1870 platform_device = platform_create_bundle(platform_driver,
1873 if (IS_ERR(platform_device))
1874 return PTR_ERR(platform_device);
1879 EXPORT_SYMBOL_GPL(asus_wmi_register_driver);
1881 void asus_wmi_unregister_driver(struct asus_wmi_driver *driver)
1883 platform_device_unregister(driver->platform_device);
1884 platform_driver_unregister(&driver->platform_driver);
1887 EXPORT_SYMBOL_GPL(asus_wmi_unregister_driver);
1889 static int __init asus_wmi_init(void)
1891 if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) {
1892 pr_info("Asus Management GUID not found");
1896 pr_info("ASUS WMI generic driver loaded");
1900 static void __exit asus_wmi_exit(void)
1902 pr_info("ASUS WMI generic driver unloaded");
1905 module_init(asus_wmi_init);
1906 module_exit(asus_wmi_exit);